i9-12900K vs i9-7900X

VS

Aggregate performance score

Core i9-7900X
2017
10 cores / 20 threads, 140 Watt
13.25
Core i9-12900K
2021
16 cores / 24 threads, 125 Watt
26.09
+96.9%

Core i9-12900K outperforms Core i9-7900X by an impressive 97% based on our aggregate benchmark results.

Primary details

Comparing Core i9-7900X and Core i9-12900K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking568191
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation2.9637.30
Market segmentDesktop processorDesktop processor
SeriesCore i9 (Desktop)Intel Core i9
Power efficiency8.9619.75
Architecture codenameSkylake (server) (2017−2018)Alder Lake, Golden Cove, Gracemont (2021)
Release date26 June 2017 (7 years ago)4 November 2021 (3 years ago)
Launch price (MSRP)$999$589

Cost-effectiveness evaluation

Performance per price, higher is better.

i9-12900K has 1160% better value for money than i9-7900X.

Detailed specifications

Core i9-7900X and Core i9-12900K basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores10 (Deca-Core)16 (Hexadeca-Core)
Threads2024
Base clock speed3.3 GHz3.2 GHz
Boost clock speed4.5 GHz5.2 GHz
Bus typeDMI 3.0DMI 4.0
Bus rate4 × 8 GT/s8 × 16 GT/s
Multiplier3332
L1 cache64 KB (per core)80K (per core)
L2 cache1 MB (per core)1.25 MB (per core)
L3 cache14 MB (shared)30 MB (shared)
Chip lithography14 nm10 nm
Die sizeno data215.25 mm2"
Maximum core temperature95 °C100 °C
Maximum case temperature (TCase)72 °C72 °C
64 bit support++
Windows 11 compatibility++
Unlocked multiplier++

Compatibility

Information on Core i9-7900X and Core i9-12900K compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration1 (Uniprocessor)1
SocketSocket R4FCLGA1700
Power consumption (TDP)140 Watt125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-7900X and Core i9-12900K. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI++
AVX++
vPro++
Enhanced SpeedStep (EIST)++
Speed Shiftno data+
Turbo Boost Technology2.02.0
Hyper-Threading Technology++
TSX+-
Idle Statesno data+
Thermal Monitoring-+
SIPP-+
Turbo Boost Max 3.0++
Deep Learning Boost-+

Security technologies

Core i9-7900X and Core i9-12900K technologies aimed at improving security, for example, by protecting against hacks.

TXTno data+
EDB++
Secure Keyno data+
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-7900X and Core i9-12900K are enumerated here.

AMD-V+-
VT-d++
VT-x++
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-7900X and Core i9-12900K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4DDR4, DDR5
Maximum memory size128 GB128 GB
Max memory channels42
Maximum memory bandwidth85.33 GB/s76.805 GB/s
ECC memory support-+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardN/AIntel UHD Graphics 770
Quick Sync Video-+
Clear Video HDno data+
Graphics max frequencyno data1.55 GHz
Execution Unitsno data32

Graphics interfaces

Available interfaces and connections of Core i9-7900X and Core i9-12900K integrated GPUs.

Number of displays supportedno data4

Graphics image quality

Maximum display resolutions supported by Core i9-7900X and Core i9-12900K integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4no data4096 x 2160 @ 60Hz
Max resolution over eDPno data5120 x 3200 @ 120Hz
Max resolution over DisplayPortno data7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Core i9-7900X and Core i9-12900K integrated GPUs, sometimes API versions are included.

DirectXno data12
OpenGLno data4.5

Peripherals

Specifications and connection of peripherals supported by Core i9-7900X and Core i9-12900K.

PCIe version3.05.0 and 4.0
PCI Express lanes4420

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

i9-7900X 13.25
i9-12900K 26.09
+96.9%

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

i9-7900X 21040
i9-12900K 41435
+96.9%

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

i9-7900X 1444
i9-12900K 2647
+83.3%

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

i9-7900X 8857
i9-12900K 15555
+75.6%

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

i9-7900X 7287
i9-12900K 9859
+35.3%

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

i9-7900X 49738
i9-12900K 71819
+44.4%

3DMark06 CPU

3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.

i9-7900X 12678
i9-12900K 18753
+47.9%

wPrime 32

wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.

i9-7900X 2.91
+25.8%
i9-12900K 3.66

Cinebench 11.5 64-bit multi-core

Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.

i9-7900X 24
i9-12900K 46
+91%

Cinebench 15 64-bit multi-core

Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.

i9-7900X 2148
i9-12900K 4057
+88.9%

Cinebench 15 64-bit single-core

Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.

i9-7900X 193
i9-12900K 289
+50%

Cinebench 11.5 64-bit single-core

Cinebench R11.5 is an old benchmark by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version loads a single thread with ray tracing to render a glossy room full of crystal spheres and light sources.

i9-7900X 2.2
i9-12900K 3.5
+59.1%

TrueCrypt AES

TrueCrypt is a discontinued piece of software that was widely used for on-the-fly-encryption of disk partitions, now superseded by VeraCrypt. It contains several embedded performance tests, one of them being TrueCrypt AES, which measures data encryption speed using AES algorithm. Result is encryption speed in gigabytes per second.

i9-7900X 12.1
i9-12900K 19.3
+59.1%

WinRAR 4.0

WinRAR 4.0 is an outdated version of a popular file archiver. It contains an internal speed test, using 'Best' setting of RAR compression on large chunks of randomly generated data. Its results are measured in kilobytes per second.

i9-7900X 5918
i9-12900K 11834
+100%

x264 encoding pass 2

x264 Pass 2 is a slower variant of x264 video compression that produces a variable bit rate output file, which results in better quality since the higher bit rate is used when it is needed more. Benchmark result is still measured in frames per second.  

i9-7900X 121
i9-12900K 201
+66.1%

x264 encoding pass 1

x264 version 4.0 is a video encoding benchmark uses MPEG 4 x264 compression method to compress a sample HD (720p) video. Pass 1 is a faster variant that produces a constant bit rate output file. Its result is measured in frames per second, which means how many frames of the source video file were encoded per second.  

i9-7900X 217
i9-12900K 367
+69%

Gaming performance

Pros & cons summary


Performance score 13.25 26.09
Recency 26 June 2017 4 November 2021
Physical cores 10 16
Threads 20 24
Chip lithography 14 nm 10 nm
Power consumption (TDP) 140 Watt 125 Watt

i9-12900K has a 96.9% higher aggregate performance score, an age advantage of 4 years, 60% more physical cores and 20% more threads, a 40% more advanced lithography process, and 12% lower power consumption.

The Core i9-12900K is our recommended choice as it beats the Core i9-7900X in performance tests.


Should you still have questions on choice between Core i9-7900X and Core i9-12900K, ask them in Comments section, and we shall answer.

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Intel Core i9-7900X
Core i9-7900X
Intel Core i9-12900K
Core i9-12900K

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Community ratings

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